Update tests to reduce size for webclient samples

[wing328]

a follow up PR to #23031

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---

Summary by cubic

Reduce the webclient Java sample used in tests by switching to a minimal Petstore spec (addPet only), cutting generated files and speeding up CI.

• Refactors
  • Point bin/configs/java-webclient-springBoot4-jackson3.yaml to modules/openapi-generator/src/test/resources/3_0/petstore-addpet-only.yaml.
  • Regenerate samples to include only PetApi.addPet; remove other Petstore APIs/models/docs to shrink output.
  • Update default base URL to http://petstore.swagger.io/v2 and refresh descriptions in generated headers/README.
  • Adjust models: Pet.photoUrls is now List<String>; Category.name is optional; minor doc tweaks for Tag/Category.
  • Replace example code in README to use PetApi; drop references to removed APIs.

^{Written for commit 74b151e. Summary will update on new commits.}

[cubic-dev-ai]

1 issue found across 187 files

Note: This PR contains a large number of files. cubic only reviews up to 75 files per PR, so some files may not have been reviewed.

Prompt for AI agents (unresolved issues)

Check if these issues are valid — if so, understand the root cause of each and fix them. If appropriate, use sub-agents to investigate and fix each issue separately.


<file name="samples/client/petstore/java/webclient-springBoot4-jackson3/README.md">

<violation number="1" location="samples/client/petstore/java/webclient-springBoot4-jackson3/README.md:9">
P2: The new README text incorrectly tells users to use an API key, but this generated client is documented and demonstrated with OAuth (`petstore_auth`) only.</violation>
</file>

_{Reply with feedback, questions, or to request a fix. Tag @cubic-dev-ai to re-run a review.}

[cubic-dev-ai]

P2: The new README text incorrectly tells users to use an API key, but this generated client is documented and demonstrated with OAuth (petstore_auth) only.

Prompt for AI agents

Check if this issue is valid — if so, understand the root cause and fix it. At samples/client/petstore/java/webclient-springBoot4-jackson3/README.md, line 9:

<comment>The new README text incorrectly tells users to use an API key, but this generated client is documented and demonstrated with OAuth (`petstore_auth`) only.</comment>

<file context>
@@ -6,7 +6,7 @@ OpenAPI Petstore
 - Generator version: 7.21.0-SNAPSHOT
 
-This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
 
 
</file context>

Suggested change

	This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
	This is a sample Petstore server. For this sample, configure OAuth (`petstore_auth`) to test the authorization filters.